I'm not sure the tired/overwhelmed hangover effect is necessarily from social media. I like to think most of my time spent on the internet is productive,reading documentation and cs articles/papers for the most part and i still get that hangover feeling.
That’s mental fatigue from learning and being engaged on a topic for a duration. Maybe some additional from screen time/blue light fatigue. But it used to happen after studying for hours pre-internet.
Just my hunch, but post student life, I think many people are not actually using the internet regularly the way you describe. Only a small percentage of people are doing productive tasks, it’s mostly leisurely consumption
There's a noticeable difference to me between exercising my thinking skills and feeling mentally exhausted versus consuming lots of media and feeling "hungover".
I get that exhausted feeling after any hard day at work. On the other hand, scrolling through reels for about 30 minutes gives me a headache. If I spend over an hour on YouTube, I also get a similar feeling, but only if that time was spent watching many different videos. If I watched one 2 hour video, I feel fine.
Whoa no need to attack the poor mouse. It has its place. Especially in a generation of PC gamers that came up with optical mice. Me personally the muscle memory I have from PC gaming for some reasons or other seem to have made navigating ui with a mouse that much more intuitive to me over the last 2 decades and some odd years. To the point it actually feels really good and extremely proficient to me. I feel like I'm faster using a mouse than just pure kb shortcuts. Although I do use a combination of keyboard short cuts and my mouse. Guess it just depends on the task/work flow.
Try Manjaro w/ cinnamon. I think it looks pretty good graphically out of the box and the latest stable release is still blazing fast on my old hp 8440p laptop with an old dual core i5 from the early 2010s. I dont know but cinnamon on Manjaro feels pretty damn snappy to me even on older hardware.